Raspberry Streusel Bars

Bahan-bahan (12 porsi)

• 1/2 cup (8 Tbsp; 113g) unsalted butter, melted
• 1/4 cup (50g) granulated sugar
• 1 teaspoon pure vanilla extract
• 1/4 teaspoon salt
• 1 cup (125g) all-purpose flour (spooned & leveled)
• 3/4 cup (240g) raspberry preserves*
• 12 -16 fresh raspberries*
• 1/2 cup (43g) old-fashioned whole rolled oats
• 1/3 cup (70g) packed light or dark brown sugar
• 1/4 teaspoon ground cinnamon
• 1/4 cup (31g) all-purpose flour (spooned & leveled)
• 1/4 cup (4 Tbsp; 56g) unsalted butter, cold and cubed
• optional (but encouraged!): vanilla icing for topping